An 8-year-old boy died after slipping off the Piney Shores Resort dock into six feet of water in Lake Conroe during a Sunday afternoon outing with his father and brother.

Precinct 1 Constable's Lt. Tim Cade said "it all happened very quickly," as the boy's father promptly pulled him out of the water and tried to administer CPR.

"Someone can inhale water that fills your lungs and be gone in minutes," said Cade. An autopsy has been ordered.

According to investigators, the boy was playing along the shore with his father and brother when he walked onto the dock, sat down and dangled his feet in the water. Then somehow he slipped into the water and his father rushed over to pull him out, Cade said.

"He was still conscious when his father carried him to the nearby picnic table and began administering CPR, with instructions from the 911 dispatcher," said Cade. The child was not responsive by the time emergency workers arrived and flew him to Memorial Hermann Hospital, where he was pronounced dead.

Neither the name of the boy or his father, who is from Houston, was released.

This latest drowning brings to seven the number of lake-related deaths since May in Montgomery County.

Five of the earlier deaths also occurred in Lake Conroe - three from a boating accident and two who drowned after jumping off a dock or barge. The sixth fatality occurred when a swimmer drowned in a small private lake in the Lake Conroe Forest subdivision not far from Lake Conroe.